Nest JS and Angular deploy in cPanel

I am working on a site with stack as Nest JS (for REST APIs) and Angular (for frontend). Problem is my Angular is deployed successfully and working fine but the nest js production build is not able to communicate whenever I hit the correct URL of an API the server redirects it to the frontend. Below is my main.ts code.

import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { AppModule } from './app.module';
import * as cookieParser from 'cookie-parser';
import { ConfigService } from '@nestjs/config';

async function bootstrap() {
  const app = await NestFactory.create(AppModule, { logger: ['error', 'warn']});
  app.setGlobalPrefix('test/api')
  app.use(cookieParser());
  app.useGlobalPipes(new ValidationPipe({ whitelist: true }));
  const config = app.get(ConfigService);
  console.log()
  var whitelist = ['https://xyz.in', 'https://www.xyz.in', 'http://xyz.in', 'http://www.xyz.in'];
  app.enableCors(
    {
      credentials: true,
      origin: function (origin, callback) {
        if (whitelist.indexOf(origin) !== -1) {
          console.log("allowed cors for:", origin)
          callback(null, true)
        } else {
          console.log("blocked cors for:", origin)
          callback(new Error('Not allowed by CORS'))
        }
      },
      allowedHeaders: 'X-Requested-With, X-HTTP-Method-Override, Content-Type, Accept, Observe',
      methods: "GET, PUT, POST, PATCH, DELETE, UPDATE, OPTIONS"
    }
  );
  app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Methods', 'GET, PUT, POST, PATCH, DELETE, UPDATE, OPTIONS');
    res.header('Access-Control-Allow-Headers', 'Content-Type, Accept');
    next();
  });
  await app.listen(process.env.PORT || 3000);
}
bootstrap();

The cPanel Node version is 12.22.3 and this is my package.json file which I kept in server.

{
  "name": "xyz",
  "version": "0.0.1",
  "description": "",
  "author": "",
  "private": true,
  "license": "UNLICENSED",
  "scripts": {
    "start": "node main.js"
  },
  "dependencies": {
    "@nestjs/common": "^8.4.3",
    "@nestjs/config": "^2.0.0",
    "@nestjs/core": "^8.4.3",
    "@nestjs/jwt": "^8.0.0",
    "@nestjs/platform-express": "^8.4.3",
    "@nestjs/serve-static": "^2.2.2",
    "@nestjs/typeorm": "^8.0.3",
    "@types/cookie-session": "^2.0.44",
    "class-transformer": "^0.5.1",
    "class-validator": "^0.13.2",
    "cookie-parser": "^1.4.6",
    "cookie-session": "^2.0.0",
    "mysql2": "^2.3.3",
    "passport-jwt": "^4.0.0",
    "reflect-metadata": "^0.1.13",
    "rimraf": "^3.0.2",
    "rxjs": "^7.5.5",
    "typeorm": "^0.2.45"
  },
  "jest": {
    "moduleFileExtensions": ["js","json","ts"],
    "rootDir": "src",
    "testRegex": ".*\\.spec\\.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "testEnvironment": "node"
  }
}

Please let me know what's causing this issue.